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发明名称
Crépine
摘要
申请公布号
FR1482020(A)
申请公布日期
1967.05.26
申请号
FR19663307802
申请日期
1966.02.16
申请人
发明人
CASSAIGNE ELIEN
分类号
E21B43/08
主分类号
E21B43/08
代理机构
代理人
主权项
地址
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